Results 11 to 20 of about 56,768 (286)

Enantiomers

open access: yes, 2021
Only in exceptional cases, a pair of enantiomers do form a series of mixed crystals. The most well-known of the exceptions is the system laevorotatory carvoxime+dextrorotatory carvoxime; its properties are discussed in some detail. Also, attention is given to recent work on the polymorphism of optically active drugs.
Oonk, H. A. J., Rietveld, I. B.
core   +3 more sources

Copper (II) Ions Induced Self-Disproportionation of Enantiomers in Capillary Electrophoresis for the Quantification of Atenolol Enantiomers

open access: yesMolecules, 2023
Despite the fact that the self-disproportionation of enantiomers (SDE) has been found for several decades and has been widely used in crystallization, sublimation and chromatography for the purification or separation of nonracemic compounds, the ...
Shaoqiang Hu
doaj   +2 more sources

The Enantiomers: Revolution or Evolution

open access: yesCurrent Topics in Medicinal Chemistry, 2001
The use of single stereoisomers are gaining popularity in the world of anesthesiology. The reduced costs of production have made these compounds available for clinical application. The majority of drugs used in anesthesiology such as ketamine, isoflurane, etomidate, atracurium, bupivacaine and ropivacaine have an asymmetric carbon, and are still used ...
Ekatodramis G, Borgeat A
openaire   +4 more sources

On the Separation of Enantiomers by Drift Tube Ion Mobility Spectrometry [PDF]

open access: yes, 2022
Racemic mixtures of twelve common α-amino acids and three chiral drugs were tested for the separation of their enantiomers by drift tube ion mobility spectrometry (IMS)-quadrupole mass spectrometry (QMS) by introducing chiral selectors into the buffer ...
Markus, Doerr   +1 more
core   +1 more source

The separation of specific enantiomers of anticancer reagent cytarabine using HPLC. [PDF]

open access: yes
During the research and development stage of any drug candidate, there is a growing need to investigate the properties of existing enantiomers, if the drug possesses chirality.
Kamble, Shweta Ashok
core   +4 more sources

MODULATION OF CALCIUM CHANNELS IN ARTERIAL SMOOTH-MUSCLE CELLS BY DIHYDROPYRIDINE ENANTIOMERS [PDF]

open access: yes, 1993
The actions of the optical enantiomers of BAY K 8644 and Sandoz 202,791 were studied on barium inward currents recorded using the whole-cell configuration of the patch clamp technique from enzymatically isolated smooth muscle cells from the rabbit ear ...
S Hering   +7 more
core   +1 more source

High proline content of bacteria-sized particles in the western North Pacific and its potential as a new biogeochemical indicator of organic matter diagenesis

open access: yesFrontiers in Marine Science, 2015
Amino acid (AA) compositions were determined for bacteria-sized particles and particulate organic matter (POM) collected in offshore regions of the western North Pacific.
Hiroyuki eTakasu, Toshi eNagata
doaj   +1 more source

Enantioselective effects of the fungicide metconazole on photosynthetic activity in Microcystis flos-aquae

open access: yesEcotoxicology and Environmental Safety, 2021
Enantiomers of chiral fungicides usually display different toxic effects on nontarget organisms in the surrounding environment, although there are rare reports on the enantioselective toxicity of metconazole (MEZ) to aquatic organisms, such as ...
Ling Li, Peiling Huang, Junjie Li
doaj   +1 more source

Characterization of the conglomerate form of acetyl-dl-leucine by thermal analysis and solubility measurements [PDF]

open access: yes, 2012
Starting from a mixture of enantiomers in solution, crystallization can generate different types of crystals. In order to determine which type of crystal is obtained in the case of acetylleucine, an active pharmaceutical ingredient (API), analytical ...
B. Biscans   +9 more
core   +1 more source

Enantioseparation and stereoselective dissipation of the novel chiral fungicide pydiflumetofen by ultra-high-performance liquid chromatography tandem mass spectrometry

open access: yesEcotoxicology and Environmental Safety, 2021
Pydiflumetofen is a novel and efficient broad-spectrum chiral fungicide consisting of a pair of enantiomers. A simple and sensitive chiral analytical method was established to determine the enantiomers of this chiral fungicide in food and environmental ...
Zhen Wang   +8 more
doaj   +1 more source

Home - About - Disclaimer - Privacy